Not trying to be a dick but if there is one person who I would never, ever, ever accept into raid it's bio. Also, using us as a back up = not good. Plus the fact that he is an attention seeking cockhead. Ever remember him going through his bisexual phase? He just decided 'Hey, I know who's popular! Bus3r! And he's bi! Maybe if I pretended to be bi, I'd be popular!'.
So yeah, no fucking way.